121123211200 has 84 divisors (see below), whose sum is σ = 304380241632. Its totient is φ = 47418419200.

The previous prime is 121123211161. The next prime is 121123211213. The reversal of 121123211200 is 2112321121.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 730141 + ... + 880540.

Almost surely, 2^121123211200 is an apocalyptic number.

121123211200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121123211200 is an abundant number, since it is smaller than the sum of its proper divisors (183257030432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121123211200 is a wasteful number, since it uses less digits than its factorization.

121123211200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610750 (or 1610735 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 121123211200 its reverse (2112321121), we get a palindrome (123235532321).

The spelling of 121123211200 in words is "one hundred twenty-one billion, one hundred twenty-three million, two hundred eleven thousand, two hundred".